When you park the line on a block you can often save the weight and cost of an extra winch or clutch. Our mobile jammer block is for situations where a fixed deck block can't help: peeling spinnakers, or changing a sheet winch.

When you park the line on a block you can often save the weight and cost of an extra winch or clutch. Our mobile jammer block is for situations where a fixed deck block can't help: peeling spinnakers, or changing a sheet winch.